docs: def export(self):
          """
              See DiskExportManager.export
          """
          with LogTask('Exporting disk {} to {}'.format(self.name, self.dst)):
              with utils.RollbackContext() as rollback:
                  rollback.prependDefer(
                      shutil.rmtree, self.dst, ignore_errors=True
                  )
                  self.copy()
                  if not self.disk['format'] == 'iso':
                      self.sparse()
                  self.calc_sha('sha1')
                  self.update_lago_metadata()
                  self.write_lago_metadata()
                  self.compress()
                  rollback.clear()